计算力学学报2011，Vol.28Issue(4)：547-552,6.
刚体单元及其在多体系统动力学中的应用
Rigid elements and their application in dynamics of multibody systems
摘要
Abstract
In many multi-body software based on the traditional theories of dynamics of multibody systems,parameters such as the mass,the center of mass and the moments of inertia of a body usually have to be given artificially,which results in many difficulties in practice applications,because these parameters are not easy to obtain especially when bodies are complicated in shape.This paper presented a methodology enables to overcome these difficulties.The main idea is to divide a body into many pieces with regular shape called rigid elements.Two kinds of element,the rigid beam element and the rigid tetrahedron element are constructed in this paper,with the consideration of their ability to represent any solid body.Based on the new methodology,a software with mesh generator was developed,which can obtain the inertia parameters of bodies with any shape automatically.The correctness of present rigid elements was verified by numerical examples.关键词
多体系统/刚体单元/转动惯量Key words
multibody systems/rigid elements/moments of inertia分类
数理科学引用本文复制引用
齐朝晖,方慧青..刚体单元及其在多体系统动力学中的应用[J].计算力学学报,2011,28(4):547-552,6.基金项目
国家自然科学基金（10972044）资助项目 （）
